Verification Error

I was on a dungeon earlier with a friend then i logged out when I was still inside.I logged back in and tried to play my pirate then an error saying that the dungeon was fullprevented me from playing during the character verification then another error saying i lost connection.

Level 65 Location: I was at the dungeon: Wreck of the Victory ' with a friend when i logged out The bug has happened once. I'm not sure if i can reproduce the bug. I logged back in a few hours later and it appears to be working fine again.